public class MobileTelephone {
	SIM card;
	public void useSIM(SIM card) {
		this.card = card;
	}
	public void showMess() {
		System.out.println("使用的卡是:"+card.giveCorpName()+"提供的");
	  	System.out.println("手机号码是:"+card.giveNumber());
   }
}

